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The Superworld I pp 129–175Cite as

“Inos” and “Sparticles”

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Part of the book series: The Subnuclear Series ((SUS,volume 24))

Abstract

We first describe N=1 supersymmetric theories, and present experimental limits on the new particles predicted. We then discuss N=2 extended supersymmetric grand-unified theories, the relations they provide between gauge and Higgs bosons, and how they can be formulated in a 6-dimensional spacetime.

Ten years ago, when I talked about spin-0 leptons and quarks, spin-1/2 gluons and photons, etc., I was considered a mad theoretician, and the idea of a “superworld” seemed totally crazy. By now I am supposed to be a phenomenologist -although no new physics has shown up yet. But these days anyone who lives ordinarily in (3+1) spacetime dimensions, considers pointlike particles and cares about objects which do exist (like photons and electrons, W±’s and Z’s, etc.) is labelled a phenomenologist. Despite the lack of experimental evidence, yesterday’s crazy theoretical ideas have become what is often viewed as today’s “phenomenology”. This is what I will describe in sections I and II of the present lectures.

Beyond that, in section III, I will also discuss the more speculative ideas of extended supersymmetry, which lead us to postulate, again, the existence of more new particles. Such theories may be formulated in an extended spacetime invoiv.ing additional dimensions of very small sizes. They provide, in particular, a simple physical interpretation for the grand-unification mass, which originates -in four dimensions- from the large values of the momenta carried by the GUT particles along extra space dimensions.

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Authors and Affiliations

  1. Laboratoire de Physique Théorique de l’Ecole, Normale Supérieure, 24 rue Lhomond, Paris, France

    Pierre Fayet

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  1. Pierre Fayet
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Editors and Affiliations

  1. European Physical Society, Geneva, Switzerland

    Antonino Zichichi

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© 1990 Plenum Press, New York

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Fayet, P. (1990). “Inos” and “Sparticles”. In: Zichichi, A. (eds) The Superworld I. The Subnuclear Series, vol 24. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1318-2_5

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  • DOI: https://doi.org/10.1007/978-1-4684-1318-2_5

  • Publisher Name: Springer, Boston, MA

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